Hi, I'm encountering an issue where I can't upload screenshots of the game (cover image was uploaded successfully). And when I tried to save the page without deleting the screenshots, I get a 'map key expected integer' error. But if I deleted the screenshots and save the page, it could be saved successfully. 

Any help would be appreciated!

I have the same problem.

The workaround I've found is to delete screenshots, save the changes and then add screenshots again.